# Interest Compounding

Instead of the traditional way of compounding by the block, Patronus distributes interest by the second.

On most lending platforms, the interest rates that users see on their website pages can never be met based on the premise that the contract is triggered by a transaction in order to settle the interest.

<figure><img src="/files/WoGpaj1icy9iHTlWuQVI" alt=""><figcaption></figcaption></figure>

Patronus converts deposit APY and borrowing APY into interest rate per second and adopts continuous compound interest calculation to ensure the perfect match between actual interest and borrowing period.&#x20;

<figure><img src="/files/4N5ZNYlQqzb41EmeXuAH" alt=""><figcaption></figcaption></figure>

Under this interest calculation method, the account update no longer depends on the trigger of the smart contract, and the accrued interest is no longer affected by other factors, ensuring the timeliness and predictability of the interest rate model.


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